What'd make this even more interesting but maybe not better, would be if at the very end when the brother becomes king, he betrays mc because he is jealos of how finne likes him, it is alos revealed that it was the brother who killed the 1st prince to take the throne. Mc then pulls a ancient magic time reversal magic back to the very 1st chp and we watch as mc gets his revenge and saves the day by becoming the king.
I also feel like inne has had a crush on mc ever since their childhood.